"Alexander I (Russian: Александр Павлович, Aleksandr Pavlovich; 23 December [O.S. 12 December] 1777 – 1 December [O.S. 19 November] 1825[a]) was the Emperor of Russia (Tsar) between 1801 and 1825. He was the eldest son of Paul I and Sophie Dorothea of Württemberg. Alexander was the first king of Congress Poland, reigning from 1815 to 1825, as well as the first Russian Grand Duke of Finland, reigning from 1809 to 1825.
Alexander´s greatest achievement was his victory over Napoleon, who had attacked Russia in 1812, and marched with his Grande Armée from France to Moscow, but was then expelled from Russia and later defeated by a coalition of allies, Russia among them. Over the course of a number of diplomatic congresses, the victorious Alexander played an impressive role in determining the political restructuring of post-Napoleonic Europe." - (en.wikipedia.org 31.10.2019)
